Detailed introduction to anodizing and chemical oxidation of aluminum pipes and other aluminum materials

1) Anodizing, anodicoxidation electrolytic oxidation process. The surface of aluminum or aluminum alloys during this process is usually transformed into an oxide film that has protective, decorative and other functional properties.

    (2) Anode anode1) An electrode that discharges negative ions to generate positive ions or undergoes other oxidation reactions during the electrolysis process. 2) Objects that can play the above role.

    (3) Cathode1) An electrode that discharges positive ions to generate negative ions or undergoes other reduction reactions during the electrolysis process. 2) Objects that can play the above role.

    (4) Auxiliary electrode: An additional anode or cathode used to distribute the current evenly during the electrolysis process.

    (5) Current density currentdensity is the intensity of current passing through the unit surface area of an object. Amperes per square meter or per square decimeter (A/m2, A/dm2) are generally used.

    (6) Critical current density: a specific current density value during electrolysis. Different and sometimes undesirable reactions will occur above or below this value.

    (7) Current efficiency: The ratio of the effective current consumed to form an oxide film during the anodization process to the theoretical current calculated by Faraday's law. Usually expressed as a percentage.
    (8) Anode efficiency anodeefficiency1) generally refers to the current efficiency in a specific anode process. 2) During the anodizing process, the ratio of the electricity used to generate the oxide film to the total electricity used.

    (9) AC anodizing ACanodizing is anodizing using alternating current.

    (10) DC anodizing DCanodizing anodizing using direct current.

    (11) Sulfuric acid anodizing sulfuracidanodizing is anodizing performed with sulfuric acid electrolyte.